Installing Prebuilt Binaries
apt-get install dovecot-imapd dovecot-pop3d
Doing a fresh install of (the current) Fedora Core 2 dovecot will be installed by default. Upgrading from previous Fedora Core 1 the Cyrus-IMAPd will be installed exchanging the obsolete uw-imapd. To install dovecot uninstall Cyrus-IMAPd with
yum remove cyrus-imapd*
and install dovecot with
yum install dovecot
Of course you can use too up2date or apt to do so.
Once the dovecot package is installed you can configure it by editing /etc/dovecot.conf. The default configuration has the POP3 protocol disabled and only IMAP enabled. The default storage format is mbox and as INBOX the file /var/spool/mail/$USER is used. If you migrate from uw-imapd and having mail stored inside the users' home directories as well, you then will have to do some steps foreach mail user
cd $HOME mv $(cat .mailboxlist) ./mail/ mv .mailboxlist ./mail/.subscriptions
For more explainations and details please see http://wiki.dovecot.org/moin.cgi/Migration.
To start the dovecot daemon and being sure it start with each system boot run
service dovecot start chkconfig dovecot on
FreeBSD and OpenBSD
cd /usr/ports/mail/dovecot; make install